完成评论功能

    1. 定义评论的视图函数
      @app.route('/comment/',methods=['POST'])
      def comment()：
      读取前端页面数据，保存到数据库中
    2. 用<input type="hidden" 方法获取前端的"question_id" 
    3. 显示评论次数
    4. 要求评论前登录
    5. 尝试实现详情页面下的评论列表显示
def loginFirst(func):
    @wraps(func)
    def wrapper(*args, **kwargs):
        if session.get('user'):
            return func(*args, **kwargs)
        else:
            return redirect(url_for('sign_up'))
    return wrapper

@app.route('/comment/', methods=['POST'])
@loginFirst
def comment():
    comment = request.form.get("new_comment")
    question_id = request.form.get("question_id")
    author_id = User.query.filter(User.username == session.get('user')).first().id
    comm = Comment(author_id=author_id,question_id=question_id,detail=comment)
    db.session.add(comm)
    db.session.commit()
    context = {
        'comments': Comment.query.order_by('creat_time').all()
    }
    question = Question.query.filter(Question.id == question_id).first()
    return render_template('question_detail.html', ques=question, **context)

 

{% extends'base.html' %}
{% block title %}
    详情*
{% endblock %}
{% block head %}
    <link rel="stylesheet" href="{{ url_for('static',filename='css/question_detail.css')}}" type="text/css">
{% endblock %}
{% block main %}
<body>
<div class="detail">
    <div class="detail_left">
       <h3>{{ ques.question }}</h3>
        <a style="font-size: 18px">{{ ques.author.username }} <span class="badge">{{ ques.creat_time }}</span></a>
        <hr>
        <a>{{ ques.questionDetail }}</a>
        <hr>
        <form action="{{ url_for('comment') }}" method="post">
            <textarea  name="new_comment" class="form-control" rows="3" id="new_comment" placeholder="请写下你的评论..."></textarea>
            <input name="question_id" type="hidden" value="{{ ques.id }}"/>
            <br><button type="submit" class="btn-default">发布</button>
        </form>
        <h4>评论：({{ ques.comments|length }})</h4>
        <ul class="list-group">
        {% for foo in ques.comments %}
            <li class="list-group-item">
                <span class="glyphion-heart-empty" aria-hidden="true"></span>
                <a href="#">❤{{ foo.author.username }}</a>
                <span class="badge">{{ foo.creat_time }}</span>
                <p class="comdetail">{{ foo.detail }}</p>

            </li>
        {% endfor %}
        </ul>

     </div>
</div>
</body>
{% endblock %}

 

 

posted @ 2017-12-13 13:49  011赖颖璇  阅读(81)  评论(0)    收藏  举报